22 lines
649 B
JavaScript
22 lines
649 B
JavaScript
const caesar = require("./caesar");
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describe("caesar", () => {
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it("works with single letters", () => {
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expect(caesar("A", 1)).toEqual("B");
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});
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it("works with words", () => {
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expect(caesar("Aaa", 1)).toEqual("Bbb");
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});
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it("works with phrases", () => {
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expect(caesar("Hello, World!", 5)).toEqual("Mjqqt, Btwqi!");
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});
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it("works with negative shift", () => {
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expect(caesar("Mjqqt, Btwqi!", -5)).toEqual("Hello, World!");
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});
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it("wraps", () => {
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expect(caesar("Z", 1)).toEqual("A");
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});
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it("works with large shift factors", () => {
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expect(caesar("Hello, World!", 75)).toEqual("Ebiil, Tloia!");
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});
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});
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